*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root {
  --bg-deep: #0f1923;
  --bg-panel: rgba(14, 8, 24, 0.6);
  --bg-card: rgba(20, 11, 32, 0.5);
  --green: #ffc83d;
  --green-dim: #c79a1e;
  --green-glow: rgba(255, 200, 61, 0.5);
  --neon: #ffffff;
  --text: #f8fbff;
  --dim: #64748b;
  --border: rgba(255, 200, 61, 0.18);
  --border-active: rgba(255, 200, 61, 0.5);
  --shadow: rgba(255, 200, 61, 0.05);
}

body {
  background: #070310;
  color: var(--text);
  font-family: 'Orbitron', sans-serif;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 500;
  letter-spacing: 0.5px;
  overflow: hidden;
  position: relative;
}

/* matrix rain canvas */
#matrixRain {
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.55;
}


@keyframes flicker {
  0%, 100% { opacity: 1; filter: drop-shadow(0 0 15px var(--green-glow)); }
  32% { opacity: 1; }
  33% { opacity: 0.85; filter: drop-shadow(0 0 5px var(--green-glow)); }
  34% { opacity: 1; }
  65% { opacity: 1; }
  66% { opacity: 0.9; }
  67% { opacity: 1; }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes pulseIndicator {
  0%, 100% { transform: scale(1); opacity: 0.4; }
  50% { transform: scale(1.3); opacity: 1; }
}

@keyframes cardEntrance {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.container {
  width: 100%;
  max-width: 460px;
  padding: 24px;
  position: relative;
  z-index: 10;
  animation: cardEntrance 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* HUD corners */
.hud-corner {
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid transparent;
  pointer-events: none;
  z-index: 12;
  transition: all 0.5s ease;
}
.hud-tl { top: 0; left: 0; border-top-color: var(--green); border-left-color: var(--green); }
.hud-tr { top: 0; right: 0; border-top-color: var(--green); border-right-color: var(--green); }
.hud-bl { bottom: 0; left: 0; border-bottom-color: var(--green); border-left-color: var(--green); }
.hud-br { bottom: 0; right: 0; border-bottom-color: var(--green); border-right-color: var(--green); }

.hero {
  text-align: center;
  margin-bottom: 24px;
}
.hero h1 {
  font-family: 'Orbitron', sans-serif;
  font-size: 2.8rem;
  font-weight: 900;
  letter-spacing: 10px;
  color: #fff;
  margin-left: 10px; /* offset letter-spacing */
}
.hero .sub {
  font-size: 0.72rem;
  letter-spacing: 4px;
  color: var(--neon);
  opacity: 0.8;
  margin-top: 8px;
  text-transform: uppercase;
  font-weight: 600;
}

/* telemetry grid */
.trio {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}
.trio .c {
  background: var(--bg-card);
  padding: 12px 6px;
  text-align: center;
  border: 1px solid var(--border);
  font-size: 0.6rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--dim);
  backdrop-filter: blur(8px);
  position: relative;
  transition: all 0.3s;
}
.trio .c::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--green-dim);
}
.trio .c:hover {
  border-color: var(--border-active);
  box-shadow: 0 0 10px rgba(255, 200, 61, 0.1);
  color: var(--text);
}
.trio .c:nth-child(1) { color: var(--green); }
.trio .c:nth-child(2) { color: var(--neon); }
.trio .c:nth-child(3) { color: var(--green); }

.trio .c .dot {
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 6px var(--green);
  margin-right: 6px;
  vertical-align: middle;
  animation: pulseIndicator 1.5s infinite;
}

/* glassmorphic card panel */
.panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  backdrop-filter: blur(16px);
  box-shadow: 
    0 10px 40px -10px rgba(0, 0, 0, 0.7),
    0 0 30px -5px rgba(255, 200, 61, 0.05);
  position: relative;
  overflow: hidden;
  transition: border-color 0.4s, box-shadow 0.4s;
}
.panel:hover {
  border-color: rgba(255, 200, 61, 0.25);
  box-shadow: 
    0 10px 40px -10px rgba(0, 0, 0, 0.75),
    0 0 30px -2px rgba(255, 200, 61, 0.08);
}

.panel-head {
  padding: 16px 24px;
  border-bottom: 1px solid rgba(255, 200, 61, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.panel-head .title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--green);
  display: flex;
  align-items: center;
  gap: 8px;
}
.panel-head .deco {
  font-family: 'Orbitron', sans-serif;
  font-size: 0.65rem;
  color: var(--dim);
}

.panel-body {
  padding: 30px 24px;
}

.form-group {
  margin-bottom: 24px;
}
.form-group label {
  display: block;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--neon);
  margin-bottom: 10px;
}
.input-wrapper {
  position: relative;
  width: 100%;
}
.input-wrapper::before {
  content: '[';
  position: absolute;
  left: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--green-dim);
  font-family: 'Orbitron', sans-serif;
  font-size: 0.9rem;
  transition: all 0.3s;
}
.input-wrapper::after {
  content: ']';
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--green-dim);
  font-family: 'Orbitron', sans-serif;
  font-size: 0.9rem;
  transition: all 0.3s;
}
.input-wrapper:focus-within::before {
  color: var(--green);
}
.input-wrapper:focus-within::after {
  color: var(--green);
}

.form-group input {
  width: 100%;
  padding: 16px 28px;
  background: rgba(0, 0, 0, 0.45);
  color: #fff;
  border: 1px solid rgba(255, 200, 61, 0.1);
  font-size: 0.92rem;
  font-family: 'Orbitron', sans-serif;
  letter-spacing: 2.5px;
  outline: none;
  transition: all 0.3s;
  text-align: center;
}
.form-group input:focus {
  border-color: var(--green);
  background: rgba(0, 0, 0, 0.6);
  box-shadow: 
    0 0 15px rgba(255, 200, 61, 0.15),
    inset 0 0 8px rgba(255, 200, 61, 0.05);
}
.form-group input::placeholder {
  color: rgba(255, 255, 255, 0.15);
  letter-spacing: 1px;
}

/* Connect button */
.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 16px;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  font-family: 'Orbitron', sans-serif;
  border: 1px solid var(--green);
  cursor: pointer;
  background: linear-gradient(135deg, rgba(255, 200, 61, 0.15), rgba(255, 200, 61, 0.02));
  color: #fff;
  position: relative;
  overflow: hidden;
  transition: all 0.3s;
  box-shadow: 0 0 15px rgba(255, 200, 61, 0.05);
}
.btn::before {
  content: '';
  position: absolute;
  top: 0; left: -100%; width: 100%; height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 200, 61, 0.2),
    transparent
  );
  transition: all 0.5s ease;
}
.btn:hover::before {
  left: 100%;
}
.btn:hover {
  background: rgba(255, 200, 61, 0.22);
  box-shadow: 0 0 25px var(--green-glow);
  border-color: var(--green);
  transform: translateY(-1px);
}
.btn:active {
  transform: translateY(1px);
}
.btn:disabled {
  opacity: 0.3;
  pointer-events: none;
}

.msg {
  padding: 14px 18px;
  margin-top: 20px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 1px;
  display: none;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid transparent;
  text-align: center;
}
.msg.active {
  display: block;
}
.msg.err {
  border-color: rgba(255, 200, 61, 0.3);
  background: rgba(255, 200, 61, 0.06);
  color: #ffd24a;
}
.msg.ok {
  border-color: rgba(255, 200, 61, 0.3);
  background: rgba(255, 200, 61, 0.06);
  color: var(--green);
}

.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 200, 61, 0.2);
  border-top-color: var(--green);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.hint {
  text-align: center;
  margin-top: 28px;
  font-size: 0.65rem;
  color: var(--dim);
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 600;
  font-family: 'Orbitron', sans-serif;
}
.tg-login-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  margin-top: 4px;
  padding: 10px 20px;
  background: linear-gradient(135deg, #0088cc, #006aab);
  color: #fff;
  font-family: 'Orbitron', sans-serif;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-decoration: none;
  transition: all 0.2s;
  box-shadow: 0 4px 20px rgba(0,136,204,0.3);
}
.tg-login-btn:hover {
  background: linear-gradient(135deg, #0099dd, #0077bb);
  box-shadow: 0 6px 28px rgba(0,136,204,0.5);
  transform: translateY(-1px);
}